USA
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Antennas : Magnetic Loop- QRP HF Loop Antenna
- IZ0HCC
This is an uncommon loop antenna hombrewed without the small feeding loop With small spare ...[ Hits: 162 | Votes: 1 | Rating: 10 ]
- Portable magnetic loop antenna
- VK3IL
A portable loop antenna made with a 3 meter loop resonates with the chosen capacitor ...[ Hits: 167 | Votes: 2 | Rating: 9 ]
- Multi-Band 4 Foot Magnetic Loop with Gamma Match
- AA1IK
This antenna works on 17 20 and 30 meters with the best bandwidth on 20 ...[ Hits: 141 | Votes: 2 | Rating: 10 ]
- The 2BD beam antenna for 20 meters
- EA2BD
A light portable 2 element Delta beam antenna for 14 MHz It is basically a ...[ Hits: 186 | Votes: 1 | Rating: 8 ]
- Zeppelin aerials
- OK1MMN
Zeppelin Antenna notes historical references and a description of the classic Zeppelin antenna how current ...[ Hits: 166 | Votes: 3 | Rating: 7 ]
- Northern Utah WebSDR USA
- sdrutah.org
This online WebSDR is located near Corinne Utah has coverage on all U S amateur ...[ Hits: 519 | Votes: 3 | Rating: 10 ]
- BG2FX Amateur Radios
- BG2FX
Yu produces miniaturized amateur radio transceivers for portable usage Yu designed and sold the FX ...[ Hits: 122 | Votes: 1 | Rating: 1 ]
- Amateur Radio License Map
- HamInfo
Use this map to find amateur radio license holders in the USA.[ Hits: 312 | Votes: 2 | Rating: 5.5 ]
- Aircraft Scatter on 6 Meter FT8
- VE3VN
Aircraft scatter is easily seen on the spectrogram window of digital communication apps when you ...[ Hits: 180 | Votes: 2 | Rating: 9.5 ]
- USA Amateur Radio Repeaters
- IU3BLA
USA Amateur Radio Repeaters Directory, 2m and 70cm bands.[ Hits: 96 | Votes: 0 | Rating: 0 ]
- Calculation of the Maximum Usable Frequency
- IEEE
This paper presents the method of calculating the maximum usable frequency MUF and field strength ...[ Hits: 244 | Votes: 2 | Rating: 5.5 ]
- HF communication prediction tools
- BOM
Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to ...[ Hits: 169 | Votes: 0 | Rating: 0 ]
- What to Expect at Solar Minimum
- K9LA
Article on operating aids and band usage during solar minimun periods Author tries to explain ...[ Hits: 230 | Votes: 1 | Rating: 1 ]
- The KA7OEI FT-817 Battery Types
- KA7OEI
Operating the FT 817 from various types of batteries such as Alkaline Cells NiCd or ...[ Hits: 95 | Votes: 0 | Rating: 0 ]
- KB3IFH QSL Cards
- KB3IFH
KB3IFH Full Color quality QSL Eyeball cards Free custom design imaging scanning based in Hampstead ...[ Hits: 120 | Votes: 1 | Rating: 10 ]
- FT-817 CAT library
- CO7WT
Serial CAT interface to control a Yaesu FT 817 transceiver Inspired in the James Buck ...[ Hits: 121 | Votes: 0 | Rating: 0 ]
- AI Projections for Ham Radio Modes in 2023-2025
- G7VJR
In an innovative analysis Michael G7VJR employs NeuralProphet to predict ham radio modes usage trends ...[ Hits: 55 | Votes: 0 | Rating: 0 ]
- 50 MHz 300W Power Amplifier
- VK3NX
This project addresses the need for a 50 MHz Amplifier providing substantial power for Australian ...[ Hits: 71 | Votes: 0 | Rating: 0 ]
- Computer headset adapted for Ham Radio Usage
- IZ7ATH
Adapting a common PC earphone with microphone to connect to a transceiver via a homemade ...[ Hits: 192 | Votes: 0 | Rating: 0 ]
- A Simple Hybrid Software Defined Radio
- AA8C
This Hybrid SDR is a combination of a current technology analog radio techniques used with ...[ Hits: 115 | Votes: 0 | Rating: 0 ]
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